Seven Keys
Plot: Convict Russell is bequeathed a set of seven keys by a fellow prisoner. After discovering that the deceased was an embezzler who stole an unrecovered £20,000, he sets out to find the cash after finishing the last three months of his sentence

Jeannie Carson
Alan Dobie
Delphi Lawrence
John Carson
Anthony Nicholls
Robertson Hare
Fabia Drake
Colin Gordon
Peter Barkworth
Jeremy Lloyd
John Horsley